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Demonstrates how to pass each object in the container to a member function of different class instance. You can alternatively do this using "boost::bind":http://developer.qt.nokia.com/wiki/QtConcurrent-BlockingMapped-Other-Object-Member-Function-Bind

#include <QtConcurrentMap&gt;
#include <QVector&gt;

  1. include <boost/bind.hpp&gt;
  1. include <iostream&gt;

class Object{};

class MyClass
float operator()(const Object&amp; object) { return 1.0f;}
typedef float result_type;

int main()
QVector&amp;lt;Object&amp;gt; v;
Object a;

MyClass myClass;

QVector&lt;float&gt; result = QtConcurrent::blockingMapped&lt;QVector&lt;float&gt; >(v.begin(), v.end(), myClass);

std::cout << result[0] << std::endl;
return 0;